Carbureter.



No. 792,878. PATENTED JUNE 20, 1905.

H. BRASIER.

GARBURETBR.

APPLICATION FILED 13150.10

Patented J' une 20, 1905..

PATENT HENRI BRASIER, OF PARIS, FRANCE.

CARBURETER.

SPECIFICATION forming part of Letters Patent No. 792,878, dated June 20, 1905.

Application filed December 10, 1903. Serial No. 184,577.

To all whom, it may concer-n:

Be it known that I, HENRI BRAsIuR, engineer, a citizen of the French Republic, residing at 36 Rue Molitor, Paris, France, haveinvented a certain new and useful Carbureter, of which the following is a full, clear, and exact description, and for which I have applied for Letters Patent in France, dated February 17, 1903, No. 329,480, and in Germany, dated March 6, 1903.

This invention relates to a carbureter for explosion-engines.

The following description is given with referencc to the annexed drawings, on which- Figure l is a sectional elevation on line A B of Fig'. 3. Fig. 2 is a vertical section on line C D of Fig. 3. Fig. 3 is a plan. Fig. 4 is a part sectional elevation relative to a modification.

This carbureter comprises a large tube a, in which the mixture of sprayed liquid and air takes place. This tube ends at its lower part in an air-inlet pipe a', and at its upper end the tube c is connected to the induction-pipe a2, which conducts the gas mixture to the motor. 1n the lower part of the tube a are arranged two converging ajutages or nozzles b placed obliquely, so that jets therefrom will meet in the axis of the tube e. These two nozzles communicate with a constant-level chamber or receiver c.

The tube e is in communication laterally at its part above the nozzles and by means of openings c3 with 'a chamber d. A supplementary supply of air can be admitted through these openings, and for this purpose the chamber CZ is iitted with a pipe d for the admission of air, which is regulated by a cone This cone e is made of a preferably light cup or plate of aluminium or celluloid, for example, which is mounted and guided on a rod f. This rod f is screw-threaded and engaged by a sleeve f, arranged as ascrew of quick thread in a plug forming part of the wall of chamber (Z. Cone c is pressed toward the orifice of the pipe ci by a spring f', which bears upon the end of the sleeve f2. By moving the rod f relatively to the sleevef the tension of the spring j" can be regulated as desired. A lock-nutj13 enables the adjustment to be maintained.

The sleeve f2 is furnished with a hand-leverfi, by means of which it can be moved, and thus the position of the cone e for the minimum admission of air can be regulated. Y

The tube a is surrounded by a heatingjacket L, in which circulates a portion of the cooling-water from the engine.

The working of this carbureter is as follows: During the suction-stroke the two jets of liquid projected from the nozzles b meet and form a stream, which is changed into a cone of atomized liquid, as shown on the drawings, and of which the mixture with air is effected very completely. When the motor is running at a slow or medium speed, the cone e remains pressed by its spring f to or toward the bore of the tube CZ and allows to pass only a quantity of air enough to form with the air drawnin at a the minimum quantity of carburization corresponding to the particular speed of the motor. When the speed of the motor increases, the cone e rises (the tension of the spring f being suitably adjusted) and allows to pass the necessary quantity of air to comply with the correspondingly-increased output of the nozzles b. The lift of cone e varies according to the strength of the suction-stroke of the piston. In these conditions the quantity of air sucked in remains always proportionate to the quantity of liquid which is projected or supplied from the nozzles b.

A modification of the arrangement of the cone for admitting supplementary air is shown in Fig. 4L. This arrangement is intended to avoid the cone assuming too jerky movements, notably in the case of two-stroke motors,and especially one-cylinder engines,in which the suction is not continuous, and in the case of light touring automobiles, which are themselves subject to abrupt movements due to the roadsurface. This arrangement consists in constructing the cone e in such a manner that it forms a cylinder mounted upon a piston, which is fast to the shaft f, this piston not being a tight [it in the cylinder, and therefore allowing a slight leak. The cone e is subject to the action of a spring f, as in the first example, and otherwise rests upon a cushioning spring e. Under these conditions the cone when it has assumed a predetermined position corresponding with the suction of the motor does not leave it abruptly to come nearer to the orifice of the tubing CZ", which might cause disturbances in the carburization, and consequently the cone maintains itself in the position corresponding to the working conditions of the motor.

rI`he carbureter above described may be constructionally modified Without departing from its essential features. It is to be noted, for example, that the number of nozzles or ajutages may be more than two.

Having thus described my invention, what I claim as such, and desire to secure by Letters Patent, is-

l. In a carbureter for explosion-engines, the combination with a carbureting pipe or chamber having an air-inlet at its lower end and connected at its upper end with the induction-pipe leading to the engine, of a plu rality of upwardly-inclined converging nozzles extending into the carbureting-pipe at opposite sides thereof, near the air-inlet end and communicating with a receiver for the liquid to be carbureted, the nozzles being so arranged that the jets therefrom meet in the axis of the carbureting-pipe at a suitable inelination, whereby the suction of the engine causes the jets to form a conical stream of atomized liquid which mixes with the air sucked into the said carbureting-pipe.

2. A carbureter for explosion-engines comprising a carbureting pipe or chamber open at one end to the atmosphere and adapted for connection with the induction-pipe leading to the engine, a plurality of liquid-fuelsupply nozzles extending into the said pipe at opposite sides thereof, and converging at their inner ends, the said converging ends being arranged to cause the jets to meet in the center of the carbureting-pipe in line with the airinlet opening,a supplemental air-supply chamber communicating' with the carbureting pipe or chamber and havingan air-inlet, anda valve for regulating the admission of air to said supplemental air-chamber, the said valve being actuated by the suction of the engine and lifted more or less according to the suction of the different working speeds of the engine to allow more or less air to enter the chamber, vfor the purpose set forth.

3. carbureter, comprising walls forming a passage open at one end to the atmosphere,

and aplurality of fuel-nozzles discharging into said passage and arranged at opposite sides thereof, said nozzles being set to cause the streams therefrom to meet or converge at the longitudinal center of said passage, and in line with the air-inlet opening.

4. A carbureter for explosion-engines, comprising a tube arranged for communication at one en d with the ind uction-pipe leading to the engine, the other end of said pipe being open to the atmosphere, and liquid-fuel-supply nozzles extending into the tube at opposite sides thereof and converging at their inner ends, the said converging ends being inclined and arranged to cause the jets to meet in the center of the carbureting-tube and in line with the air-inlet opening.

5. Acarbureter for explosion-engines, comprising a vertical tube connected at its upper end with the induction-pipe leading to the engine, the lower end of said tube being open to thc atmosphere, a liquid-fuel-supply chamber, nozzles communicating with the liquid-fuelsupply chamber and extending into the lower part of the carbureting-tube at opposite sides thereof, the nozzles being upwardly inclined converging at their inner ends, and arranged to cause the jets to meet in the center of the carbureting-tube in line with the air-inlet opening, a supplemental air-supply chamber surrounding the carbureting-tube and conimunicating therewith above the said nozzles, the said supplemental air-supply chamber also communicating with the atmosphere, and means for controlling the admission of air to said chamber.

6. A carbureter, comprising walls forming a passage, one end of said passage being open to the atmosphere, the said passage being contracted near its open end and flaring from the contracted portion to said open end, a plurality of nozzles extending into the passage at opposite sides thereof and adjacent to the contracted portion of said passage, the said nozzles being inclined and converging at their inner ends and arranged to cause the jets to meet in the axis of said passage, and means for admitting a supplemental air-suppl y to said passage.

vIn testi mony whereof I have signed my name to this specification in the presence of t\vo'subscribing witnesses.

HENRI BRASIER.

/Vitnesses:

GUs'rAvn DUMONT, H. C. Coxn.

IOO 

